44979581 has 2 divisors, whose sum is σ = 44979582. Its totient is φ = 44979580.

The previous prime is 44979577. The next prime is 44979601. The reversal of 44979581 is 18597944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42120100 + 2859481 = 6490^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 44979581 - 2² = 44979577 is a prime.

It is a super-3 number, since 3×44979581³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44970581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22489790 + 22489791.

It is an arithmetic number, because the mean of its divisors is an integer number (22489791).

Almost surely, 2^44979581 is an apocalyptic number.

It is an amenable number.

44979581 is a deficient number, since it is larger than the sum of its proper divisors (1).

44979581 is an equidigital number, since it uses as much as digits as its factorization.

44979581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 44979581 is about 6706.6818174116. The cubic root of 44979581 is about 355.6355236399.

The spelling of 44979581 in words is "forty-four million, nine hundred seventy-nine thousand, five hundred eighty-one".